TLDR
Enter a command. For example: popeye, tcsh, gitlint, ncmpcpp.

mosquitto_sub

 
A simple MQTT version 3.1.1 client that will subscribe to topics and print the messages that it receives. More information: https://mosquitto.org/man/mosquitto_sub-1.html.
 
  • Subscribe to the topic sensors/temperature information with Quality of Service (QoS) set to 1. (The default hostname is localhost and port 1883):
     
    mosquitto_sub -t {{sensors/temperature}} -q {{1}}
     
  • Subscribe to all broker status messages publishing on iot.eclipse.org port 1885 and print published messages verbosely:
     
    mosquitto_sub -v -h "iot.eclipse.org" -p 1885 -t {{\$SYS/#}}
     
  • Subscribe to multiple topics matching a given pattern. (+ takes any metric name):
     
    mosquitto_sub -t {{sensors/machines/+/temperature/+}}

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